Underframe for railway-cars.



H. R. KEITHLBY". UNDERFRAMB POB. RAILWAY CARS.4

APPLICATION FILED NOV. l8, 1913. L 31 @4p @@3, mmewuly 28, 1914.

a sums-SHEET 1.

IN V EN TQR.

` TTORNE YS.

H. R. KEITHLEY.

UNDBRPBAME'POR RAILWAY GARS.

APPLICATION YILBD Nv.8,1913.

Patented July 28, 1914. I

3 SHEETS-SHEET 2.v

,m0/mera. 4

. R. KEITHLY.

H UNDERFRAME FOR RAILWAY GARS.

APPLIOATXON FILED NOV. 8, 1913v4 Patented Juiy 2g, 19m

3 SHEETS-SHEET 3.

' /n/z/ENroH KEW Cla an improved underi're Ywhich the f Jrt'o ried bytlie center 'i the use of deep side sills and thus obt-n eeonomy inWeight oit metal and "ie A! Y il Ul, l.

time avoid tlie weakening? of tlie structure at the corners or' tliecar.

l iuitlier object of my intenti produce en improved underrrime constition in which the greater portion of l will be carried by center sillsextending con tinuously from one end or the car to tile other or, atleast past the bolsters, Without A further object of my invention is toproduce an improved underframe construe-- tion embodyinr lead-carryingcent-er sills and side sills so connected that the side sills carry aconsiderable portion of tlie lood and transfer it to the center sills etsuoli a distance from the bolsters that tbe bending: moment due to thetransferred load l. be less than an equal loe-d uniformly i tributedalong center sills or tributed or carried to the sills f the cross beamsor transoms heretofore ployed in that type wherein ce t are intendedcarry load the bolsters.

A further object of my invention is to construct a ear underi'rsne topermit the use of llbeams or all or sills Witliout making the structureunduly heavy? The various features et novel* i my invention ischaracterized i after be pointed out with my invention and of itsobjects tages, reference r o be lied to the ing detailed descriptionteleu tion with the accompanying wherein:

Figure l is a top ple-.n View of t-liejonderframe arranged in accordanceWith my invention; eig. 2 is section on an enlarged scale on line 2-2 ofl;

g, d scale Fig, 3 is a section on an enlar fe on line 3 3 of Fig. l;Fig., i` e section on an enlarged scale online it-Ll of lig. l; Fig. 5is a View on the saine scales as Views 2, 3 ,and d of the end sill asViewed from the top of Fig. l; Fig. 6 is e section on an enlarged scaleon line 6 6 of Fig. e; Fig.

is a section on an enlarged scale on line {lL-7 Fig. 8 is s section ov`med seele Online 8 3 or en on an. enlarged ecole Girmi.

and l@ is a side View .an 7 n y n wien or toe underlrame shownunderframe construction, ie two lia-lues are identical.

to the drawings, l and 2 ere sills in the form of -beams. The sills areconnect-ed together by ing top cover plate,s3, extending end and rivetedto the top Jue sills. Rigidly connected to the are transverse bodybolsters, 4, e nre rellel with the bolsters, at the enter sills are endsills, 5. Belsterjs are transoms, 6. 7 and i le in the form of -loeamseX- :nested to the ends ot the bolsters "T .4. i, coneI scribe the loadmay be distributed in any `esired proportion between the side sills andtlie center sills, the transom serving to more or less of the load fromthe sides to the center sills. qWith a series of cross members uniformlyspaced between tl bo tbe load upon the center sills uniformlydistributed load equal the total load and lying` directly center sillsand an eque-.l load ,conu i at the points where the trans entiers crossthe center sills. if enough of tile Pross members the center :.lls il bepractically ie total load unitormly distributed. tiere are vtwo maintrsnsolns the the sides of the car is or' course red to tlie centersills at two points rei the holsters e distance equal soa, between thecentersl of the i end the trensoms. lli/here the sido designed to carryany consideren' or" the load the transoms must ity be arrangedcomparatively close om. .er7 that is at a considerable distance bolstersand therefore the bending e due to the load transferred by tlie .s tothecenter sill is comparatively at and may possibly necessitate the use`leeper center sills than would be requiredl support the whole load as auniformi ibuted load on the center sills. This f ion is true with theordinary spacing rnsoms when tlie distance between them As apprimimatelyequal to one-third the dis- 'tance between tlie bolsters. As thespecingbet-mien the transoms is increased the bending' moment of the loodstransferred thereby to tire center sill decreases until it is s'sntiallyequal to the bending moment "u, e, uniformly distributed load when the'7 tu/*een transoms equals apone-hell? the distance between e drawings Ihave illustrated only one end sill to another andruction of -tlie typejust de sills extending through thelll ifi

actin-l c l,

o superstructure c niislre the side frames will carry the load 'thetrsnsoms is iliie trensoins is increesed so es relie it ter tien helithe dis` tence bet-Ween t :olst tne bending; moment nsierred by themomen" or tiie leed bnJ sind thereiore it alle? er. in

in elle the mi neces- Wheels. ln theor-din e, foro/ing e speri o' opfeet between the t es i the span r than heli order to clear csr und Yproiiinietslr belet-ers, neL l. between the t" the distance bem "en gliel; fore reduces the moi leed trensfemfed by tin to the center sills to eminimum..

lily invention is on tie theory thet l f soins ss illustrated, anyincrease in the d ice between the transoins over heli t.. dist-encebetween the .bolsters produces sch e distribution of the r sills tlietthe letter may be mede lighter 'then in any construction heretofore eiploy'ed in which the center ester portion ci the total "o being that trnsoins ere placed es close eonditions 'will permit, l iniuin spe-nbetsv'eeAa 'with the use oia tr eretciore explain 7 is necesere it isattempted to place ell ld on the @enter sills9 to have side l ersestending from the holsters to sills olf the been to use very light sideniembers co `ming over the bolsters from one end, ene ser to other. ilyarranging the trsnsoins es i have heretofore explained, actualload-carrying side sills may be used tedere l1,

' to advantage, mening' it unnecessary to have o specially trussedsuperstructure to take nortions of the load which may be borne iif'hcllyby the under-freine. ln other Words, the long span between the transoinspermits :i conn-n fetively heavy' side sill to be used clicienily andthis sido sill, continuingr out to the end sills of the csr, provideseffective lossupporting nienibers between the bole'nd the end sills,lowing' them strong enough to held up the ond sill under the ent dus tothel csr sind. the practice here- ,center sills shallow' enough topermit them l to pass over the truck bolsters and shallowerload-carrying side sills which will give niuch stronger constructionfrom the belet-ers to the ends of the cer than has heretofore beenpossible with deep center sills, and at the seine tiine securing thesaine economy of instel over the construction in which there ere tourdeep load-carrying sills es has heretofore been obtained by using deepcenter sills to cerrylell the load.

it will oi course be understood ythat with my novel arrangement oftransoins the edntsge of lighter center sills is obtained even thoughinstead of side sills, as shown,

speciali? trussed superstructure is employed. The trensoms ere olicourse rigidly connected to the center sills so as to :ict as strongcsntelivers supported by the center sills end extending to the sidesills. Between the` trensorns there may be arranged 9g cross-bearers esindicated et 9. While these cross-bearers may have any suitableconstruction, they may be so designed that they 7will serve as beamssupported et their ends by the side sills and supporting the center 95.sills midway between their ends, the eect `being that they will transferen overload :from the center sills to the side sills or, in other words,equalize the loads between the four sills so that each will beer thatportion or the load which it is intended to carry. A convenient Way ofconstructing the crossbes-rers is that best illustrated in Fig. Il ofthe drawings; the cross-bearer comprising two side members connected tothe Webs of the center sills end connected together by ineens of amomie-eicel@ passing beneath the bottom flanges et thecenter sill, therebeing no corresponding member across the top. Qonsequently the member 10serves as a tension member instead of as e compression member as wouldbe the case with e centa- Aliver cross-bearer. l

My construction permits the center sills to be extended continuouslyfrom one end sill to the other; but it will of course be understood thatthe center sills may tern :minste between the holsters and the endsills,suitable draft sills being connected to the center sills end bridgin thegaps between them and the end sil s. `Where the center sills arecontinued to the ebd sills the top flanges and the cover plate may beleft instaat while the inside ien'ges et the bottom may be sheared oilmat sorne distance in 125 front of the bolster, as indicated et ll, so

to allow the draft rigging to be insert/dd from beneath. l Figs. 2, 5end lO illustrate how my ini/enig y tion overcomes the ob]ect1on to deepside 130 sills heretofore noted. 7lllitli my construetion the sidesillsmay he so shallow that even though they are disposed low enough topermit the. floor stringere 12 to be placed directly over them, thebottom surfaces of the sills do not come -helow'the highest vpoints onthe Wheel treads; thus allowing the apparatus beneath the car to l bereadily inspected.

While l have illustrated and described with particularity only a singlepreferred forni of my invention, do not 'desire to he limited to theenact `structured details thus illustrated and described, but intend toserver all forms and arrangements which fall within the terms employedin the denitions y of my invention constituting the appended claims.

l claim :4

l. In a car underi'raroe, holsters, a center sill extending between saidholsters, cantalivers eXtendinsflateral-l from the eentalivers extendinglaterally from the centerl Asill at a distance from the holsters lessthan one-fourth et the span between the holsters, and load-carryingsidesills snpported by the cantalivers and each having s. .single span inthe space between the cantalivers. 3. ln a car nndert'ralne, holsters, acenter sill extending between the. holsters, loadcarrying .sidesills'extending between the holsters and. means for transferring theload carried lrhy- Fthe middle 'portions of the side sills to the centersill at points removed from the holstersless 'than one-fourth ofthedistance between the holsters. f

4. In acar onderh-ame, hodyholsters, a center sill extending betweenthe' holsters, load-carryingn side sills extending between the holstersand beyond the same to the end of the frame, andpineans for transferringthe lnd 'carried at the middle of the side sills'to the center sill atpoints located at a distance 'from the holsters less than Onefourthor'.'the span-between the holsters.

5. ln a car underrame, holsters, a. center sill. extending between theholsters, load-carrying side sills extending between' the'holsters andbeyond the saine to the ends of the frame, and csntalivers extendino'laterally from the center sill to the side sillsV at a dis-k tance fromthe holsters less than one-fourth the distance between the holsters, thesigle sills each havin i single span in the space' between the saicanssalivers. y

6. n e car unoerranie, holsters, lenter livers extending laterally Jfroaseos space between the said oantaliv'ers.

7. ri a car underfranie, holsters, a center sill eontainino two parallelthesms extending through t ie holsters, shalloler load-oarryrng sidesills extending between the hol EN, sters and also formed of l-heanls,and cantalivers extending from the center sill to the side sills at ad1stanee from the holsters less than one-fourth of the distance betweenthe 8. n a car underrame, holsters, a center sill comprisingtwo parallell'lsheains and cover plate riveted to the top flanges oit the I-beams,said center sill extending through the holsters, sliallowerload-carrying' side sills extending between the holsters escl; havingthe fol-1n of an -beani, and oai f livers extending laterally from "lsill to the side sills at a-distance nl holsters less than one-fourtlrthe di. tween the holsters.

9. ln a ear underi'rame, holsters, s Center sill extending between theholsters f yond the latter to the end oi' the frame, sa center sillscomprising two bearns olf form depth Athroughout and a cover riveted tothe upper flanges of the shallow-'er load-carrying side sills ez betweenthe holsters and beyond the si ne te the ends of the frame, said sidesills being` the form of Lheams, and end sills eonnec n ingcorresponding ends of the center sill .side sills together.,

l0. ln a ear nndertrame,--bolsters,`-..' sill extending between said hesill` at a distance 'from the bols ono-fourth of the span between le andload-carryingl side sills in tne -heams supported' bythe caiitalivereach having a single span in the spass tween the cantalivers.

11. ln a car nnderframe, holsters, acenter.

"sill containing; two parallel TE-beams extend-- ing between saidholsters, cantalivers em tending laterally, from' the center sill at adistance from the holsters less than onsfourtli of thespan between theholsters, and load-carrying side' sills supported by 'the cantaliversandeach' ha vint; a single span in,

the space between the canralivers.

' 1.2. In a car luider-frame holsters, a center sill extending betweenthe holsters, canta livers extending laterally frein the Centern sillata distance from. the holsters great g3@ Mossos mating the distancebetween the holsters and the ends ot the freine, and. load-Carryingsitio sills supported by the eantalivers and each having a single spanin the space between the eantalivers.

lll. In a ear nnclerfraine, holsters, a e'enter sill extending betweenthe holsters, end sills,

load-carrying side sillseztencling from one sill to the other andsupported by the bol sters, and oantalivers extending laterally from thecenter sill to the side sills at a distance from the holstersapproximating the distance between the encl sills and the bolsters, eachside sill having a' single span extending from one oantaliver to Hwother.

l5. ln a ear nmlerrarne, holsters, a center sill extendin" between theholsters, cantalit'ers extencling laterally from the center sill at alist-ance from the holsters less than one-onrtlro the span between theholsters, load-carrying side sills supported by the eantalirers, andCross beams supported at their ends by the side sills at points betweentheeantalivers and adapted to transfer an overload troni the centersills to the side 1G. ln a ear nnclerfranie, holsters, end sills, acenter sill ooniprising two parallel I-beams extending through theholsters to theel/id sills, each ors said -beanis having its lowervinner flange eut away for a portion' of the distance between each endsill and the corresponding bolster.

ln testimony whereof, l sign this specification in the presence of -twowitnesses.

HERBERT R.v KETHLEY.

lVitnesses:

`WM- l?. Fnnnonnnngon: .RUTH E. Znrrnnwsf l

